Hello together, recently I have (again) a problem with my Peugeot 407SW. The vehicle is a 2.0HDI with 136 hp, built in 2006. Running power meanwhile 180k. The following problem: Sporadic the engine falls off and then only starts up again with difficulty – so several start attempts are needed. In the display then comes the error message “gas system defective”. The car was already at Peugeot in the workshop about 4 weeks ago. They changed a control unit and the diesel filter. 4 weeks was quiet, today the mistake came back. I don’t really have confidence in the competence of the workshop, especially I don’t feel like exchanging any parts on suspicion – it’s just too expensive. Maybe one of you has already gained some experience here and can share them. That would be great.